On demand error code cl 17

Our on demand has been out for about a month. I have already tried all the trouble shooting, such as unplugging the box, restarting the box, restarting the modem. The initial answer to this seems to be that the box is too old, however, ours is less than 2 years old. We do not have a dvr or tivo.

On the few forum threads regarding this that have a solution, the problem seems to stem from some sort of filter work on the outside. My husband mentioned he did see an Xfinity truck and a worker up on the pole on our immediate neighborhood right before we initially noticed this.  Can other customers that have had this issue chime in on this?

And, would it be possible for someone from Xfinity to contact me regarding looking at this as a solution? I really don't want to spend hours on the phone or chat when this might be as easy a fix as a tech coming out and adjusting a filter on the pole. Thank you!